NYC-WTC_000224137

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 4/12/02 8:45:00 PM N.Y.C. Board of Education ATC Group#: 7391 28-11 Queens Plaza North Analysis Date: 4/13/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: NYC-BOE PS 234M Project#: 14584-1823

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos /Irea Non Asbestos # Structures Sensitivity Concentration Sample l/olume Analyzed Asb Type(s) 0.5p-S Sp (S/cc) fS/mm^) (S/cc) Notes

08 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7391 -8

09 1920.00 0.0450 0 None Delected 0 0 0.0045 <22.24 <0.0045 73l>/ -!)

10 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7391 -/O

II 1920:00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7391 -Il

12 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7391 -12

13 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7391 -13

14 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 < 0.0045 7391 -14

15 ■ 1920.00 0.0450 0 None Delected 0 0 0.0045 <22.24 <0.0045 7391 -IS

MARK PEYSAKHOV MICHAEL A. GORYCKI. Ph D.

Analyzed by: iproved^y:

Disclaimer The laboratory is not responsible for data reported in stmctures/oc, which is dependent on volume collect by non-laboratory personnel. This lab is only responsible lor data reported in stnjctures/mm’. This report may not be reproduced, except in full, without written approval by ATC Associates Inc. This report may not be used to claim product endorsement by NVLAP or any other agency of the U.S. Government This reports relates only to the samples reported above. Quality control data (including 95% confidence limits and laboratory and analysis' accuracy and precision) is available upon request

Aaredited for NVIAP PLWTEM #101187-0, NY State ELAP #10879

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NYC-WTC_000224138